Issue link: http://read.dmtmag.com/i/859318
Transmission Fluids Product Data castrol.com/GPS 800 255 4417 May 2025 GPS Castrol ® Trans-C ™ Low Temperature Fluidity Castrol Trans-C provides excellent cold weather pumpability and decreases wear typically associated with cold weather starts. Less wear can mean longer transmission life. Gear Protection Castrol Trans-C passes the 35VQ25 Vickers pump test ensuring protection for high pressure hydraulic systems. Because of this added gear protection, customers can consolidate fluids in on- and off-highway equipment. Castrol Trans-C Transmission Drive Train Oil meets the stringent Caterpillar TO-4 fluid requirements, particularly important where paper and elastomer disc materials are utilized and friction retention must be optimized for extended clutch life and slippage control under severe high load operations. While commercial engine oil technology excelled in the previous Caterpillar required CD/TO-2 specification where the bronze clutches prevailed, Castrol Trans-C provides field-tested technology to ensure durability under today's strenuous operating conditions and where significant clutch material changes have taken place. Castrol Trans-C will also provide Detroit Diesel Allison C-4 performance. Castrol Trans-C excels in many on and off-highway hydraulic oil applications. Castrol Heavy Duty's traditional quality approach prevails in Castrol Trans-C via premium base oil selection (high viscosity indexes) and select additives for oxidation stability, rust and corrosion protection, foaming inhibition, anti-wear protection, mild "EP" and excellent pumpability in the "SAE 10W" or ISO 32 grade. Applications and Recommendations: • Exceeds Caterpillar TO-4 specifications/requirements • Approved Allison C-4 • Vickers 35VQ25 Vane Pump performance • Many on and off-highway transmissions, drive trains and hydraulic systems Typical Analysis SAE Grade Method 10W 30 50 60 Viscosity @40°C, cSt ASTM D445 47 97 221 351 Viscosity @100°C, cSt ASTM D445 7.19 11 19 25 Viscosity Index ASTM D2270 113 99 96 91 Flash Point, °C (°F) ASTM D92 203 (397) 220 (428) 228 (442) 229 (444) Pour Point, °C (°F) ASTM D97 -42 (-44) -39 (-38) -24 (11) -24 (11) FZG Gear Scuffing, ASTM D5182 10 pass 11 pass 11 pass 11 pass Load Stage Gravity, °API ASTM D287 29.5 27.9 24.2 24.0 Specific Gravity @60°F ASTM D1298 0.879 0.889 0.907 0.91 Pounds per Gallon ASTM D287 7.32 7.4 7.56 7.58 D21 I ecastrof